我有一个JSON类文件,其中包含三个类,所有这些类都遵循以下结构:
public class ManifestJSON : INotifyPropertyChanged
{
[JsonProperty("dataType")]
private string dataType;
public string DataType
{
get
{
return dataType;
}
set
{
if(dataType != value)
{
dataType = value;
RaisePropertyChanged("DataType");
}
}
}
[JsonProperty("ttl")]
private int time_to_live;
public int Time_To_Live
{
get
{
return time_to_live;
}
set
{
if (time_to_live != value)
{
time_to_live = value;
RaisePropertyChanged("Time_To_Live");
}
}
}
[JsonProperty("serial")]
private long serial;
public long Serial
{
get
{
return serial;
}
set
{
if (serial != value)
{
serial = value;
RaisePropertyChanged("Serial");
}
}
}
[JsonProperty("modifiedIso8601")]
private string modifiedIso8601;
public string ModifiedIso8601
{
get
{
return modifiedIso8601;
}
set
{
if (modifiedIso8601 != value)
{
modifiedIso8601 = value;
RaisePropertyChanged("ModifiedIso8601");
}
}
}
[JsonProperty("modifiedTimestamp")]
private long modifiedTimestamp;
public long ModifiedTimestamp
{
get
{
return modifiedTimestamp;
}
set
{
if (modifiedTimestamp != value)
{
modifiedTimestamp = value;
RaisePropertyChanged("ModifiedTimestamp");
}
}
}
[JsonProperty("timezone")]
private string timezone;
public string Timezone
{
get
{
return timezone;
}
set
{
if (timezone != value)
{
timezone = value;
RaisePropertyChanged("Timezone");
}
}
}
[JsonProperty("exports")]
private ObservableCollection<ManifestItem> manifest_Items;
public ObservableCollection<ManifestItem> Manifest_Items
{
get
{
return manifest_Items;
}
set
{
if (manifest_Items != value)
{
manifest_Items = value;
RaisePropertyChanged("Manifest_Items");
}
}
}
//Event handling
public event PropertyChangedEventHandler PropertyChanged;
private void RaisePropertyChanged(string property)
{
Console.WriteLine("Updated");
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(property));
}
}
在另一个类中,我创建了一个ManifestJSON类型的全局实例。
public ManifestJSON manifestData;
通过使用Newtonsoft.json库中的DeserializeObject方法将JSON字符串反序列化到该对象中来填充该对象,如下所示:
manifestData = JsonConvert.DeserializeObject<ManifestJSON>(JSONString)
。这将成功填充ManifestJSON类,但是没有任何属性方法或事件被触发。我在这里做错了什么?
最佳答案
如果要更新现有数据绑定的ManifestJSON
对象,则不应使用新对象替换该对象,而应将JSON字符串反序列化为新对象,然后设置现有manifestData
对象的属性:
var newData = JsonConvert.DeserializeObject<ManifestJSON>(JSONString);
manifestData.DataType = newData.DataType;
manifestData.Time_To_Live = newData.Time_To_Live;
manifestData.Serial = newData.Serial;
//...